Dike or revetment



INVEN TOR. asaiflzzrlze A w FARNEY DIKE OR REVETMENT Filed May 9. 1927 Se t. 13, 1927.

A TTORNEYS.

I ments and to ainethod of makingsame' Patented Sept, 13, 19 27.

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under conditions encountered in the event of a sudden and material'ri'seun-the 'level of the stream where the" work is in progr'ess, my object-being to make provision for the promptcompletion "ot the work 'and' thus insure thesafety ofthetstructure and protection of' land which might. otherwise be'cut away'by erosion or damaged by flood.

-Dike's" orl revetments ofitthe" character under consideration, essentially comprise rows of piling driven to?firmxanchorageqin the bed of a strea'rn and" suitably braced longitudinally and transversely by connectingtimbers, mats woven around the piling tojbe sunk to the bed of the stream, and

screen poles extending through the mats and adapted'to collect and hold debris and sand or soil" washed against them by the stream. In the construction of "such a dike,- the mat initiallyrests on the'water'and after the screen poles are securedto-the mat it is fweighted with sutficientrrockto sink itto rthe'bed oi thestreaml Inathe event'of a sudden "rise of the water level to a material "distance above the :mat, before thescreen poles are properly secured in position, there is always danger of'the'loss of or material damage to thematyand-to guard: against such catastrophe, it is. necessary to immediately effect the sinking 0f the mat to vthe bed of the stream. -It this'is1 done' the work must be suspended, with. :the probability; of

. loss of materialand damage to thelandand other property and-perhaps endanger life itself, as heretofore; no -"meth0d;-has (been available to securely place the screen5poles underthe emergency-nor; streamv conditions depicted. I have, however,"evolved ia method and nieanssfor disposing the screen,

poles in operative position under the conditions mentioned, by providing a weighted 'fascine or bundle of poles or the like, containing rocks or other weightymaterial, and suspending it above or at the water level by wire or equivalent'connections along the length of the piling structure and at the upstreamsideof a row of the piles, and then aflixing to it the lower ends of the screen poles, and .finally having a row of men simultaneously cut the wires supporting the fascine to permit the latter to sink until itrests upon the mat and against a rowof the piling to the upstream side thereof.

Application filed'May-ti, 1927; SerialNo.189,913.

Referring now to the drawing foracomplete conception of the construction and method of operation, as hereinafter appears, and tothe appended claims defining the novelty of the invention and scope ojfrprotection soughtby patent: r Figure-l is a fragmentary plan view of a: completed dike embodying the invention, itbeing' assumed thatthe mat ison the bed ofqa stream and-that" the fascine and screen poles are in their final or operative position. --Figure-2 is an; end view otthe'same with parts broken away, and the Fiascine i and screen poles properly-assembled and sup ported in elevated position but readyto dropto position on-the-mat when the supporting wires are cut, w r l i Figure 3 is anenlarged longitudinalsec: tion; on theline III III- of Figure 2. .1

In the said drawing, 1 indicates piles driven to a safe'anchorage'into thebedof structure, theveonventional inclinedbraces 4: are also connected to the (piling.

m l- Formed uport-and around the plling at the-vwaterlevel is amat 5 composed of brush, twigs, branches oftrees orcany other suitable material, and in the event .of arsudden and n ateriali increase in depth of water which might aendanger the work already done,;su-lficient rockfi is-placed npon the neat to sink it to the bed. ofthestreammas "lndicatedf-in Figurer2. 3

Heretofore as suggested, a very sudden and material increase in the depth of the water has made it imposible to set screen poles in operative position, and this is more especially true if the mat has already been sunk in very deep water.

To Ine'et such conditions I provide a suit a able fascine 7 or weighted bundle of sticks or the like of the same or greater length than the piling structure, and arrange it at the upstream side of the downstream row. of piling so that the water cannot dislodge it, and this fascine or bundle, preferably held together by wiring 8, is suspended by wire loops 9 from the braces nearest to but above i I the water line, as shown most clearly by Figure 2.

\Vhile the fascine is thus supported, the screen poles 10 are ailixed to it at their lower ends, preferably by forcing said ends down through the t'aseine as shown in Figures 2 and 3. A man for each support then takes a position on the piling structure opposite each of said supports and upon signal all of the supports are cut so that the entire tascine together with the attached screen poles, shall sink until the former rests upon the mat and the lower ends of the screen poles are e1nbedded in or throu h the latter to aid in the anchorage oi the tascine. The final step to effect the completion of the dike, is to connect the upper ends of the screen poles tozether or in series as indicated at 11 and at the same time fasten the poles of said conneotion to adjacent braces of the piling structure, it being understood that the tops of the screen poles when the latter are in final or operative position. are preferably at approximately the same level as the tops of the piling. A dike or revetment of this character is relatively inexpensive and yet e fiiciently serves its purpose. especially in sections of country where the soil is of alluvial character and readily cut by erosive action of streams, especially when the latter are altflood stage and running rapidly.

From the above description it will be apparent that I have evolved a method of and provided a construction of dike for rapid completion in the face of a sudden and great rise in the depth of a stream, and it is to be understood that details of the method and structural features embodied may be varied or modified within the spirit and scope of the appended claims.

\Vhat I claim is:

1. The method of. producing; a dike comprising the. driving ot a plurality of rows of piling into the bed of a stream, the bracing of the rows of piles by connecting them to gether crosswise and lengthwise, at different levels, the provision and sinking of a mat around and between the piles, the provision and supporting: of a weighted tascine at or above the surface of the stream, the aflixing oi. the lower ends of a row of screen poles to the fascine, and the freeing of tl'ie'tascine from its supports, to permit it to sink upon the sunken mat and carry the screen poles with it.

2. The method of producing a dike comprising the driving of a. plurality of rows of piling into the bed of a stream, the bracing of the rows of piles by connecting them together crosswise and lengthwise, at different levels, the provision and sinking of a mat around and between the piles, the provision and supporting ot' a weighted fascine at or above the surface of the stream, the affixing ot the lower ends of a row of screen poles to the fascine, the freeing of the fascine from its supports, to permit it to sink upon the sunken mat and carry the screen poles with it, and the securing of the upper ends of the screen poles to the piling structure.

3. A dike or revetment comprising rows of piling anchored in the bed of a stream, braces connecting: the piles firmly together transversely and longitudinally, a mat around and between the poles and upon the bed of the stream, a weighted fascine, a temporary support therefor attached to the piling structure. and screen poles attached at their lower ends to the fascine and movable downward with the latter when the support there'tor is removed.

4t. A dike or revetment comprising rows of piling anchored in the bed :of a stream, braces connecting the piles firmly together transversely and longitudinally, a mat around and between the poles and upon the bed of the stream, a weighted tascine, a temporary support therefor attached to the pilin c structure, screen poles attached at their lower ends to the fascine and movable clownward with the latter when the support therefor is removed, and means for fastening the upper endsot' the screen poles to the piling structure after the [ftlSClIie and poles have descended until the former rests upon the mat.

In witness whereof I hereunto ailix my signature.

ASA WV. FARNEY.

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